CA2060482A1 - Yarn and safety apparel - Google Patents
Yarn and safety apparelInfo
- Publication number
- CA2060482A1 CA2060482A1 CA002060482A CA2060482A CA2060482A1 CA 2060482 A1 CA2060482 A1 CA 2060482A1 CA 002060482 A CA002060482 A CA 002060482A CA 2060482 A CA2060482 A CA 2060482A CA 2060482 A1 CA2060482 A1 CA 2060482A1
- Authority
- CA
- Canada
- Prior art keywords
- wrap
- cut
- synthetic fiber
- yarn
- wraps
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/442—Cut or abrasion resistant yarns or threads
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/24—Resistant to mechanical stress, e.g. pierce-proof
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/12—Threads containing metallic filaments or strips
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/16—Yarns or threads made from mineral substances
- D02G3/18—Yarns or threads made from mineral substances from glass or the like
- D02G3/182—Yarns or threads made from mineral substances from glass or the like the glass being present only in part of the structure
- D02G3/187—Yarns or threads made from mineral substances from glass or the like the glass being present only in part of the structure in the sheath
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/38—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Gloves (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
ABSTRACT
Cut-resistant yarn suitable for machine knitting and machine-knitted protective articles of apparel, more specifically flexible gloves, at least in part made from such a yarn and also such gloves having a slip-resistant coating, preferably polyurethane, applied in a predetermined pattern to the outside surface of the gloves. The yarn utilizes a core of synthetic fibers held in a bundle by two initial wraps of low denier synthetic material having widely spaced turns or by a plastic coating on, or by a plastic matrix for, the fibers. One or more strands of metal wire or glass fiber are disposed about the core. The initial wraps or plastic that bundle the core create a uniform, cylindrical shape to the multi-filament fiber core that is believed to increase cut-resistance and that promotes uniformity inyarn diameter as subsequent wraps are applied, and prevent sharp bends in the wire or glass fibers disposed about the core. Additional wraps cover the wire orglass fiber.
Cut-resistant yarn suitable for machine knitting and machine-knitted protective articles of apparel, more specifically flexible gloves, at least in part made from such a yarn and also such gloves having a slip-resistant coating, preferably polyurethane, applied in a predetermined pattern to the outside surface of the gloves. The yarn utilizes a core of synthetic fibers held in a bundle by two initial wraps of low denier synthetic material having widely spaced turns or by a plastic coating on, or by a plastic matrix for, the fibers. One or more strands of metal wire or glass fiber are disposed about the core. The initial wraps or plastic that bundle the core create a uniform, cylindrical shape to the multi-filament fiber core that is believed to increase cut-resistance and that promotes uniformity inyarn diameter as subsequent wraps are applied, and prevent sharp bends in the wire or glass fibers disposed about the core. Additional wraps cover the wire orglass fiber.
Description
IMPROVED YARN AND SAFErY APPAREL
Thc invcntion relates to cut-rcsistant yarn suitable for machine knittin~ and to safety apparcl madc wlth thc yarn.
....
Cut-rcsistant yarn utilizing stain~ess stecl w,ire in a core, typically along with hi~h strcngth synthctic fibcr, and wound with synthctic fibcr, including hi~h strength synthctic fibcr, and apparel madc from such yarn, arc known from, e.g.,~h~ Byrnes et al. U.S. Patent No. 4,384,449 and the Bcttcher U.S. Patent Nl).
4,~7(),2Sl. While ~he yarns discloscd In thosc patcnts use aramid fiber to enh;lllce c~n-r~:~isl~lncc, it is ulso known to usc hl6h strength stretched polyethylene l~ r lor ~h;lt l~urpose. Cut-rcsistant yarns havc also bccn proposed in which a wire strund 10 is not in tbe core, but rather wrappcd about a corc. Scc, c.~., Kolmes et al. U.S.
Pa~enl Nos. 4,777,789 and 4,838,017. Therc is a need for an improvcd knitabJe cu~-resist~nt yarn cnnstruction in which wire ls provided ~bPut thc core ratller lllun tormin~ the cnrc.
The prcsent invention provides an improvcd cut-resistant yarn suitable tor n~ilcl~ine kni~ing, and protective apparel made from the yarn! such us ~loves, r)rol~clivc sl~cves"~nd the like. The yarn utilizes metal wire or wires wrul~l~ed ul~o~ll u core ot tiber. Becausc of the wrappin~, a relatively ~reater amollnl ol ~irc i.~ incorl-~rated inlo ~hc ynrn than when the wlre is u strnl~ht core s rrun6emcnt oftcn rcsults in morc than a sin~lc contuct between tlle wire a 20 ;l slulrr) o~jecl ar)l~lied a6ainst the yarn. Jn addition, the wire, bein~ in a helix, is n~ ll)jec~cd ~o the tension or sharp bendin6 that a central core wire is ~Inrin~ ~he k l~ process.
The yarn of the ~resent inventlon is an improvement over known yurl)s WilC wr~ s ul)(lll~ a c~rc, csl~ccllllly l)y thc l~rovision ol two Iniliul w yl~ (ic ~ ll Illlvlll~ wi~l~ly sl~lc~ )Olll U Illlllt~
Thc invcntion relates to cut-rcsistant yarn suitable for machine knittin~ and to safety apparcl madc wlth thc yarn.
....
Cut-rcsistant yarn utilizing stain~ess stecl w,ire in a core, typically along with hi~h strcngth synthctic fibcr, and wound with synthctic fibcr, including hi~h strength synthctic fibcr, and apparel madc from such yarn, arc known from, e.g.,~h~ Byrnes et al. U.S. Patent No. 4,384,449 and the Bcttcher U.S. Patent Nl).
4,~7(),2Sl. While ~he yarns discloscd In thosc patcnts use aramid fiber to enh;lllce c~n-r~:~isl~lncc, it is ulso known to usc hl6h strength stretched polyethylene l~ r lor ~h;lt l~urpose. Cut-rcsistant yarns havc also bccn proposed in which a wire strund 10 is not in tbe core, but rather wrappcd about a corc. Scc, c.~., Kolmes et al. U.S.
Pa~enl Nos. 4,777,789 and 4,838,017. Therc is a need for an improvcd knitabJe cu~-resist~nt yarn cnnstruction in which wire ls provided ~bPut thc core ratller lllun tormin~ the cnrc.
The prcsent invention provides an improvcd cut-resistant yarn suitable tor n~ilcl~ine kni~ing, and protective apparel made from the yarn! such us ~loves, r)rol~clivc sl~cves"~nd the like. The yarn utilizes metal wire or wires wrul~l~ed ul~o~ll u core ot tiber. Becausc of the wrappin~, a relatively ~reater amollnl ol ~irc i.~ incorl-~rated inlo ~hc ynrn than when the wlre is u strnl~ht core s rrun6emcnt oftcn rcsults in morc than a sin~lc contuct between tlle wire a 20 ;l slulrr) o~jecl ar)l~lied a6ainst the yarn. Jn addition, the wire, bein~ in a helix, is n~ ll)jec~cd ~o the tension or sharp bendin6 that a central core wire is ~Inrin~ ~he k l~ process.
The yarn of the ~resent inventlon is an improvement over known yurl)s WilC wr~ s ul)(lll~ a c~rc, csl~ccllllly l)y thc l~rovision ol two Iniliul w yl~ (ic ~ ll Illlvlll~ wi~l~ly sl~lc~ )Olll U Illlllt~
2 ~
core strand and beneath the wire wrap. The two initial wraps bundle the core filaments and create a uniform, c)~lindrical shape to the multi-filament fiber cor~
that is believed to increase cut-resistance and that promotes uniformity in yarndiameter as subsequent wraps arc applied, and avoids sharp bcnds in the wrappingwire that can occur with a core made from a multifilament strand that is relatively flat or that is irregu~ar in cross-sectional sHape. This uniformity is particularly important in a yarn having a large number of wraps, a~d in preferred em-bodiments of the yarn of this invention, five wraps are utilized. Also, in preferred embodiments, wire is wound only iI~ a single direction, avoiding crossing of wire strands, thereby eliminating wear points that tend to fracture and eliminating irregularities in the yarn thickness that otherwise might occur at cross-over points.
The invention also contemp]ates glass fibers in place of or in addition to the wire or wires wrapped about the bundled core filaments.
In its broad aspects, the invention provides a cut-resistant yarn suitab]e ~or machine knitting, comprising:
(a) a 500 to 1500 denier core comprised of synthetic fibers (b) means retaining the core fibers in a bundle;
~ c) a wrap havinL~ a maximum diameter of 0.010 inch of mat~ri.ll selected from the group consisting of metal wire and glass fiber, two to twelve turns per 20 ' in~:h, disposed about the core and said means;
(d) a wrap of 300 to 2000 denier synthetic fiber disposed about the wrap ot wire or wires, with turns directly adjacent each other; and (e) another wrap of 300 to 2000 denier synthetic fiber disposed about the tirst-mentioned wrap of synthetic fiber, with turns directly adjacent each otherThe invention further provides a cut-resistant machine-knitted protective ar~icle of apparel, and more specifically a flexible glove, at ]east in part made t`rom such a yarn and also such a glove having a slip-resistant coating, preferably polyurethane, applied in a predetermined pattern to the outside surface of the gl~ve.
In one preferred construction, the yarn comprises a core having a strand of multitïlament high strength stretched polyethylene fiber of 500 to 1200 denier, allLI
the following wraps wound with helical turns about the core in the order set forth:
(a) a first wrap of S0 to 200 denier texturized nylon, four to ten turns per inch;
(b) a second wrap of S0 to 200 denier texturized nylon wound in the opposite direction from the first wrap, four to ten turns per inch;
(c) a third wrap having a maximum diameter of 0.010 inch of annealed stainless steel wire or wires, four to twelve wraps per inch;
(d) a fourth wrap of 200 to 800 denier po.lyester fiber, the turns being directly adjacent cach othcr; and (e) a fifth wrap of two 200 to 800 denier strands of polycster fiber wrapped in the opposite direction from the fourth wrap, the turns being directly adjacent each other.
In another preferred construction, the yarn comprises a core having a strand of multifilament high strength stretched polyethylene fiber of 500 to 1200 denier, and the following wraps wound with helical turns about the core in the order set forth:
(a) a first wrap of S0 to 200 dènier nylon, four to ten turns per inch;
(b) a second wrap of 50 to 200 denier nylon wound in the opposite direc-tinn from the first wrap, four to ten turns per inch;
(c) a third wrap having a maximum diameter of 0.010 inch of stainless s~eel wire or wires, four to twelve wraps per inch;
(d) a fourth wrap of 300 to 1200 denier high strength stretched polyethy-lene fiber, the turns being directly adjacent each other; and (e) a fifth wrap of 600 to 1500 denier polyester fiber wrapped in the or)pnsite direction from the fourth wrap, the turns being directly adjacent eacho~her.
The above and other features and advantages will become more apparent from the detailed description that follows.
Figure 1 is a fragmentary, diagrammatic view of a first yarn embodying the ~v~n~l()n;
Figure 2 is a fragmentary, diagramrnatic view of a second yarn embodying the invention;
Figure 3 is a diagrammatic view of an article of apparel, i.e., a knitted glove, made of yarn constructed in accordance w~ith the ~nveDtion, such as the yarn of Figure 1 or 2;
Fi~ure 4 is a diagrammatic cnlarged cross sectional view of a multifilament core in which the filaments are bundled by a coating;
Figure S is a diagrammatic cnlarged cross sectional view of a multifilament core in which the filaments are bund]ed by a matrLY; and Figure 6 is a diagrammatic view of a lmitted glove made of yarn construc-ted in accordance with the invention and having a polyurethane coating on a surface in a pattern.
The depicted glove A is exemplary of safety articles of apparel embodying the present invention (other such articles including sleeves, neck protectors, aprons, leggings and ~he like) and is a safety or protective glove suitable to be worn by nperatives in the tood processing and like industries where sharr~ ins-~ruments or articles, such as knives or material having sharp edges, for example, sheet metal, glass and the like, are handled. The ~love is made of composite or multistrand yarn B or C constructed in accordance with the present invention.
The glove A has the usual finger and thumb stalls 6, 8, respectively, and a wrist part 9 incorporating an elastic thread or yarn D and finished with an overwrap EThe glove is made using conventional ~love knitting methods and machinery.
The yarn B comprises a core part 10 and multiple wraps 12, 14, 16, 18 and 20 applied one after the other and each wound helically in an opposite directionfrom the preceding one, which helps balance forces incident to the wrappinL~s sothe yarn has no unusual twist or tendency to coil and assists in holding the wrappings in p]ace on the core.
The core part 10 is a multifilament bundle of 650 denier high strength slretched polyethylene synthetic fiber, preferably "Spectra 900" marketed by Allied Corporation, Morris Township, Morris County, N.J., U.S.A. The fiber is described in detail in U.S. patent No. 4,413,110 to Kavesh et al., the specification of which is hereby incorporated herein by reference. The eore material provides high cut-resistance, knitsbility, fle~ability and life to the yarn. Multifilament fiber of Spectra, as supplied by the manufacturcr, is rclativcly ~at in form.
The first two wraps 12, 14 are identical but wound in opposite directions about the core 10, and are each 100 denier texturized multifîlament nylon and wrapped at a rate or pitch of s~x turns per inch along the core. These two wrapsbundle the fiiarnents of the core and a}so increase the diameter about which a wire wrap 16 is wound so as to increase the amount of wire used. With the core lo fi]aments bundled, they present a unified mass rather than a spread out and thinner layer of filaments to a sharp object, to which the eore may be exposed when the yarn is in use, and it is believed to be more di~icult to eut through such an arrangement of bundled multiple filaments. The bundled eore filaments also L present a substantially cylindrical and desirably uniform shape about which to wrap the wire 16 and subsequent wraps, thereby avoiding sharp bends in the wire and-keeping the spacing of successive turns of the wire relatively uniform along theIength of the core. The texturized nylon has enhanced softness that minimizes irre~lllarities when overwound with successive wraps und théreby promote~; a finish~l y~lrn of more unitorm diameter.
The third wrap 16 is a single fully annealed stainless steel wire 0.0()3 inch h ~iameter that is wound about the core and first two wraps at a rate of 8 turns per inch, uniformly spaced. The length of this wire is approximately 35 percent grealer than the length of the core strand, and hence greater by the same amnullt than the length of a straight core wire would be ;f used, thereby providing an increased amount of steel in the yarn over a straight core wire of the same diameter. By virtue of the helical shape of the wire, a knife blade or other sharp object approaching the yarn at an angle other than that of the wire helix will tend to have to cut through the wire of each eomposite yarn strand at more than one location, thereby meeting increased resistance over a core wire, which only interrupts the cutting path once.
The fourth wrap 18 is a strand of 440 denier multifilament polyester fiber wrapped in the opposite direction from that of the wire, with each turn directly S
. `.
:;
' , ' ' .
' , . ' ' ~ ; ' ' adjaccnt thc ncxt to providc a substantially complctc covering to thc underlyingturns and core.
The fifth wrap 20 is two stran~s or so-called crlds of 440 denicr multi-filamcnt polycstcr fibcr wrappcd togcthcr in thc opposite dircction from thc fourth wrap, with cach turn dircctly adjacent thc next to pro~idc a substantially complete uJvcring to the fourth wrap. Whcrc it is desircd to impart a color to the yarn, the fourth and fifth wraps, bcing of polycstcr, may bc dycd. Thc fourth and fifth wraps, whilc not of highly cut-resistant matcrial, add body to thc yaM and provide good comfort and fccl to a garmcnt madc from thc yarn bccausc thc material is soft, flcxible, and non-abrasivc, and is not slippery, as is Spcctra.
The yarn C compriscs a core part 30 and multiple wraps 32, 34, 36, 38 and 40 applied onc after the other and each wound hdically in an opposite direction from the preceding one, which hclps balancc forces incidcnt to the wrappings so thc yarn has no unusual twist or tendency to coil and assists in holding the wrappings in place on the core.
Thc core part 30 is a multifilament strand of 650 denier high strength stretchcd polycthylcne synthetic fiber, prcferably "Spectra 900" identical to the cnre part 10.
The first two wraps 32, 34 are identical but wound in opposite directionx ahout the core 30, and arc cach 70 dcnicr multifilamcnt nylon fiber and wrapr)e~ut a rale of six turns per inch along the corc. Thesc two wraps bundlc the filamcnts of the corc so they present a unified mass rather than a spread out and thinner Inyer of fibcrs to a shurp objcct, in thc same manner and to the sume u~vantage as the wraps 12, 14.
The third wrap 36 is two (or alternativcly preferred embodimen~s may use one or three) fully annealed stainlcss steel wires cach 0.0016 inch in diameter thut are together wound as a strand in one direction abPut the core 10 and the first two wraps 12, 14 at a rate of 8 turns pcr inch, uniformly spaced, for the same purpose and to the same effect as the wire 16 in the yarn B, the length of the wire strand being similarly increascd over a straight strand. While thc volume of steel 3 is diminished over that provided in yarn B, the surface area for contacting a slnal p object is comparable and the tlexibility is grcater. Also, the profile is lower, ..
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re~uJting in a smoother base for subsequent wraps, and if wires are broken in knitting or in use, thc broken cnds do not cause the discomfort that ends of larger diameter wire do because they are not as stiff and tcnd not to prick the skin of the wearer.
The fourth wrap 38 is a strand of 650 denier Spectra 900 fiber identical to the core strand, wrapped in a direction oppositc to that of thc wrap 36, with each turn dircctly adjaccnt thc ncxt to proviidc a substantially complctc covcring to the underlying ~urns and core. Because of thc high cut-resistance of Spectra, this wrap adds substantial cut-resistance to the yarn C.
Thc fifth wrap 40 is a strand of 1300 dcnier multifilamcnt polycstcr fiber wrappcd in thc opposite direction from the fourth wrap, with each turn directly adjacent the next to provide a substantially complete covering to the fourth wrap.
The fifth wrap, while not of highly cut-resistant material, adds body to the yarn and provide good comfort and feel to a garment made from the yarn because the material is soft, flexible, and non-abrasive, and is not slippery, as is Spectra.
The finished diameter of the yarns is between about 0.019 and ~.035 inch, and preferab]y not greater than 0.02S inch, to facilitate machine knitting on cnnventional kni~ting machines.
Modi~ications to the preferred embodiments can be made without departillg from the invension. For example, synthetic materials other than the high strength slretched polyethylene can be used. If lower cut-resistance is acceptable, non-hi~h stren6th synthetic fibers may be substituted while still gainin6 the advantages of th~ pllysical arrangement provided by the invention, particularly the advantages of the bundling of the core and the use of a wire wrap. Also, normal strength synthetic fibers other than nylon and polyester can be used, such as polyethylene, polypropylene, or teflon. Glass fibers of a denier from 150 to 2000, typically Eglass or S glass, can a~so be used as a-core or wrap. Hi6h strength or so-calledhigh performance fibers other than high strength stretched polyethylene (which is sometimes referred to as extended-chain polyethylene) that can be used include hi6h strength aramid fibers, such as high strength Kevlar sold by E.I. duPont deNemours, and high strenglh liquid crystal polymer fibers, such as Vectran HS, sold hy Hoechst Celanese Corporation, Charlotte, North Carolina. A high strength ~$~1~S~
synthetic fiber matcrial is defincd for prcscnt purposes as a fiber material having a tenacity of greatcr than 10 grams pcr dcnicr. Prcfcrably the high strength fibermaterial will havc a tenacity grcatcr than 20 grams per denicr.
In yarns B and C, thc core may havc a denicr of bctwecn S00 and 2000, but prcferably betwccn S00 and 1500; thc first and sccond wraps; may have a denier of betwccn 50 and 400 and bc wrappcd at Icast ltwo ~urns pcr inch, preferably four to tcn turns pcr inch; the third wrap, whcn of wirc, may bc onc or morc annca]ed stainlcss stccl or othcr mctal wircs and, whcthcr of wirc or glass fibcr, may be up to 0.010 inch in total diamctcr and wrappcd at Icast two wraps pcr inch, prcfcrably four to twclvc wraps per inch; thc fourth wrap may havc a dcnicr of 300 to 1200,and thc fifth wrap may havc a dcinicr of 600 to 1500. Modificasions may include othcr wraps locatcd among thosc indicatcd.
The cxprcssion of total diamctcr of thc wrap of metal wircs or glass fibers is intended to specify thc sizc when thc fibcrs arc arranged in a bundle that is; substantially circular in cross scctional shapc, rcgardlcss of thc actual cross sec-tional shapc the wircs or fibcrs takc whcn incorporatcd into thc yarn, which shape may bc non-circular.
Notwithstanding ~he variafions uvailuble, the prcferrcd cmbodiments ar~
believed to ol~er the most advanta~eous constructions, considering bt)tll co~;t alld lhe various pcrformancc characteristics of cut-rcsistance, yurn uniformity, knit-ahilily, cnmfor~, wear, flexibili~y, cleanability, low fluid absorption, and appearance.
Thc prefcrred stainlcss stccl wire is 304 stainlcss stccl (although other 300 series slainless steels are also acceptable and advantageous) havin6 a tensile slrength of about 110,000 to 130,000 pounds pcr square inch. The preferred higllstrength fibcr is Spectra, which has a tenacity of I5 to 35 grams per denier and an elongation-to-break of not morc than S%.
As an altcrnative to bundling the corc fibers 10 or 30 with wraps 12, 14 or 32, 34, a core 40 shown in Figurc 4 can bc used comprised of synthetic multi-filaments 42, preferably of high strcngth fibcr, such as a Spectra, and held in a bundle substantially circular in cross section by a plastic coating 44, e g, Surlyn, allhough other coatings such as thermoplastics, polyurethane and the like may beused. Preferably, the coatin6 is no more than 0.005 inch thick. As a further "
altcMative, multifilament fibers 42a idcntical to flbers 42 may bc heid in a similarly shaped bundlc by a plastie matrlx 46 of a material sueh as any of those used forthe coating 44, to form a core 48 as shown in Figurc 5, to bc uscd in place of the eores 10 or 30 and wraps 12, 14 or 32, 34. Sueh a eorc is predominantly fibers.
A glovc F is shown in Figurc 6 knit from thc yarn 10 and has a polyur-ethanc coating S0 on an outcr surface S2. Thc eoating is a m~ure of thKotropic and non-thixotropic rcsins and is applicd in a dcsircd pattcrn dircetly to thc glove surfacc by an applicator. lhc resin mixturc partia11y pcrmcatcs the yarn for . .
adhcsion upon euring, but does not str~c through to the inside of thc glove. The 10 cured coating is cut-rcsistant, soft, ~c~o~lc and slip-rcsistant (i.c., it has a hi~h coefficicnt of friction against rclativcly d-y surfaecs), and is sceurcly adhered to the ;~ glove. The prefcrrcd patteM shown is formcd by thrcc separatc sinuous strips 54, 56, S8 of polyurcthane approximatcly 1/32 ineh hi8h and 1/16 ineh wide that do not intersect at any place. Thc pattern providcs prcdominantly lateral lines across the finger stalls with eonnecting loops only to the cxtrcme sides of the finger stalls, so in use the wearer need not buelde eoating strips extending along central areas of the finger stalls when the fingers arc bcnt. A more detailed description of the ;' : CO;I~illg and process ror applying it to knitted eut-resistant gloves, ~s well as a ~scription of othcr embodiments of gloves to which it is applied, cun be found in ,~ 20 copending U.S. patent application Serial No. 07/604,589 filed Octobcr 26, 199(), owned by the assignec of this application, the disclosure of which is hereby incorporated herein by reference.
~hile preferred embodiments of the invcntion havc been described in detail, it will he understood that various modifications and alterations may be ma~le therein without departing from the spirit and scope of the invention set torth in the appended claims.
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THE EMBODIMENTS OF THE INVENTION IN WHICH AN B CLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A cut-resistant yarn suitable for machine knitting, having:
(a) a core of at least a 150 denier comprised of synthetic fiber;
(b~ means retaining fibers of the core in a bundle;
(c) a wrap having a maximum diameter of 0.010 inch consisting of metal wire or glass fiber, two to twelve turns per inch; and (d) one or more wraps of 300 to 2000 denier synthetic fiber with directly adjacent turns.
2. A cut-resistant yarn as set forth in claim 1 wherein said means comprises one or more wraps of 50 to 400 denier synthetic fiber, at least two turns per inch.
3. A cut-resistant yarn as set forth in claim 1 wherein said means comprises a coating of plastic.
core strand and beneath the wire wrap. The two initial wraps bundle the core filaments and create a uniform, c)~lindrical shape to the multi-filament fiber cor~
that is believed to increase cut-resistance and that promotes uniformity in yarndiameter as subsequent wraps arc applied, and avoids sharp bcnds in the wrappingwire that can occur with a core made from a multifilament strand that is relatively flat or that is irregu~ar in cross-sectional sHape. This uniformity is particularly important in a yarn having a large number of wraps, a~d in preferred em-bodiments of the yarn of this invention, five wraps are utilized. Also, in preferred embodiments, wire is wound only iI~ a single direction, avoiding crossing of wire strands, thereby eliminating wear points that tend to fracture and eliminating irregularities in the yarn thickness that otherwise might occur at cross-over points.
The invention also contemp]ates glass fibers in place of or in addition to the wire or wires wrapped about the bundled core filaments.
In its broad aspects, the invention provides a cut-resistant yarn suitab]e ~or machine knitting, comprising:
(a) a 500 to 1500 denier core comprised of synthetic fibers (b) means retaining the core fibers in a bundle;
~ c) a wrap havinL~ a maximum diameter of 0.010 inch of mat~ri.ll selected from the group consisting of metal wire and glass fiber, two to twelve turns per 20 ' in~:h, disposed about the core and said means;
(d) a wrap of 300 to 2000 denier synthetic fiber disposed about the wrap ot wire or wires, with turns directly adjacent each other; and (e) another wrap of 300 to 2000 denier synthetic fiber disposed about the tirst-mentioned wrap of synthetic fiber, with turns directly adjacent each otherThe invention further provides a cut-resistant machine-knitted protective ar~icle of apparel, and more specifically a flexible glove, at ]east in part made t`rom such a yarn and also such a glove having a slip-resistant coating, preferably polyurethane, applied in a predetermined pattern to the outside surface of the gl~ve.
In one preferred construction, the yarn comprises a core having a strand of multitïlament high strength stretched polyethylene fiber of 500 to 1200 denier, allLI
the following wraps wound with helical turns about the core in the order set forth:
(a) a first wrap of S0 to 200 denier texturized nylon, four to ten turns per inch;
(b) a second wrap of S0 to 200 denier texturized nylon wound in the opposite direction from the first wrap, four to ten turns per inch;
(c) a third wrap having a maximum diameter of 0.010 inch of annealed stainless steel wire or wires, four to twelve wraps per inch;
(d) a fourth wrap of 200 to 800 denier po.lyester fiber, the turns being directly adjacent cach othcr; and (e) a fifth wrap of two 200 to 800 denier strands of polycster fiber wrapped in the opposite direction from the fourth wrap, the turns being directly adjacent each other.
In another preferred construction, the yarn comprises a core having a strand of multifilament high strength stretched polyethylene fiber of 500 to 1200 denier, and the following wraps wound with helical turns about the core in the order set forth:
(a) a first wrap of S0 to 200 dènier nylon, four to ten turns per inch;
(b) a second wrap of 50 to 200 denier nylon wound in the opposite direc-tinn from the first wrap, four to ten turns per inch;
(c) a third wrap having a maximum diameter of 0.010 inch of stainless s~eel wire or wires, four to twelve wraps per inch;
(d) a fourth wrap of 300 to 1200 denier high strength stretched polyethy-lene fiber, the turns being directly adjacent each other; and (e) a fifth wrap of 600 to 1500 denier polyester fiber wrapped in the or)pnsite direction from the fourth wrap, the turns being directly adjacent eacho~her.
The above and other features and advantages will become more apparent from the detailed description that follows.
Figure 1 is a fragmentary, diagrammatic view of a first yarn embodying the ~v~n~l()n;
Figure 2 is a fragmentary, diagramrnatic view of a second yarn embodying the invention;
Figure 3 is a diagrammatic view of an article of apparel, i.e., a knitted glove, made of yarn constructed in accordance w~ith the ~nveDtion, such as the yarn of Figure 1 or 2;
Fi~ure 4 is a diagrammatic cnlarged cross sectional view of a multifilament core in which the filaments are bundled by a coating;
Figure S is a diagrammatic cnlarged cross sectional view of a multifilament core in which the filaments are bund]ed by a matrLY; and Figure 6 is a diagrammatic view of a lmitted glove made of yarn construc-ted in accordance with the invention and having a polyurethane coating on a surface in a pattern.
The depicted glove A is exemplary of safety articles of apparel embodying the present invention (other such articles including sleeves, neck protectors, aprons, leggings and ~he like) and is a safety or protective glove suitable to be worn by nperatives in the tood processing and like industries where sharr~ ins-~ruments or articles, such as knives or material having sharp edges, for example, sheet metal, glass and the like, are handled. The ~love is made of composite or multistrand yarn B or C constructed in accordance with the present invention.
The glove A has the usual finger and thumb stalls 6, 8, respectively, and a wrist part 9 incorporating an elastic thread or yarn D and finished with an overwrap EThe glove is made using conventional ~love knitting methods and machinery.
The yarn B comprises a core part 10 and multiple wraps 12, 14, 16, 18 and 20 applied one after the other and each wound helically in an opposite directionfrom the preceding one, which helps balance forces incident to the wrappinL~s sothe yarn has no unusual twist or tendency to coil and assists in holding the wrappings in p]ace on the core.
The core part 10 is a multifilament bundle of 650 denier high strength slretched polyethylene synthetic fiber, preferably "Spectra 900" marketed by Allied Corporation, Morris Township, Morris County, N.J., U.S.A. The fiber is described in detail in U.S. patent No. 4,413,110 to Kavesh et al., the specification of which is hereby incorporated herein by reference. The eore material provides high cut-resistance, knitsbility, fle~ability and life to the yarn. Multifilament fiber of Spectra, as supplied by the manufacturcr, is rclativcly ~at in form.
The first two wraps 12, 14 are identical but wound in opposite directions about the core 10, and are each 100 denier texturized multifîlament nylon and wrapped at a rate or pitch of s~x turns per inch along the core. These two wrapsbundle the fiiarnents of the core and a}so increase the diameter about which a wire wrap 16 is wound so as to increase the amount of wire used. With the core lo fi]aments bundled, they present a unified mass rather than a spread out and thinner layer of filaments to a sharp object, to which the eore may be exposed when the yarn is in use, and it is believed to be more di~icult to eut through such an arrangement of bundled multiple filaments. The bundled eore filaments also L present a substantially cylindrical and desirably uniform shape about which to wrap the wire 16 and subsequent wraps, thereby avoiding sharp bends in the wire and-keeping the spacing of successive turns of the wire relatively uniform along theIength of the core. The texturized nylon has enhanced softness that minimizes irre~lllarities when overwound with successive wraps und théreby promote~; a finish~l y~lrn of more unitorm diameter.
The third wrap 16 is a single fully annealed stainless steel wire 0.0()3 inch h ~iameter that is wound about the core and first two wraps at a rate of 8 turns per inch, uniformly spaced. The length of this wire is approximately 35 percent grealer than the length of the core strand, and hence greater by the same amnullt than the length of a straight core wire would be ;f used, thereby providing an increased amount of steel in the yarn over a straight core wire of the same diameter. By virtue of the helical shape of the wire, a knife blade or other sharp object approaching the yarn at an angle other than that of the wire helix will tend to have to cut through the wire of each eomposite yarn strand at more than one location, thereby meeting increased resistance over a core wire, which only interrupts the cutting path once.
The fourth wrap 18 is a strand of 440 denier multifilament polyester fiber wrapped in the opposite direction from that of the wire, with each turn directly S
. `.
:;
' , ' ' .
' , . ' ' ~ ; ' ' adjaccnt thc ncxt to providc a substantially complctc covering to thc underlyingturns and core.
The fifth wrap 20 is two stran~s or so-called crlds of 440 denicr multi-filamcnt polycstcr fibcr wrappcd togcthcr in thc opposite dircction from thc fourth wrap, with cach turn dircctly adjacent thc next to pro~idc a substantially complete uJvcring to the fourth wrap. Whcrc it is desircd to impart a color to the yarn, the fourth and fifth wraps, bcing of polycstcr, may bc dycd. Thc fourth and fifth wraps, whilc not of highly cut-resistant matcrial, add body to thc yaM and provide good comfort and fccl to a garmcnt madc from thc yarn bccausc thc material is soft, flcxible, and non-abrasivc, and is not slippery, as is Spcctra.
The yarn C compriscs a core part 30 and multiple wraps 32, 34, 36, 38 and 40 applied onc after the other and each wound hdically in an opposite direction from the preceding one, which hclps balancc forces incidcnt to the wrappings so thc yarn has no unusual twist or tendency to coil and assists in holding the wrappings in place on the core.
Thc core part 30 is a multifilament strand of 650 denier high strength stretchcd polycthylcne synthetic fiber, prcferably "Spectra 900" identical to the cnre part 10.
The first two wraps 32, 34 are identical but wound in opposite directionx ahout the core 30, and arc cach 70 dcnicr multifilamcnt nylon fiber and wrapr)e~ut a rale of six turns per inch along the corc. Thesc two wraps bundlc the filamcnts of the corc so they present a unified mass rather than a spread out and thinner Inyer of fibcrs to a shurp objcct, in thc same manner and to the sume u~vantage as the wraps 12, 14.
The third wrap 36 is two (or alternativcly preferred embodimen~s may use one or three) fully annealed stainlcss steel wires cach 0.0016 inch in diameter thut are together wound as a strand in one direction abPut the core 10 and the first two wraps 12, 14 at a rate of 8 turns pcr inch, uniformly spaced, for the same purpose and to the same effect as the wire 16 in the yarn B, the length of the wire strand being similarly increascd over a straight strand. While thc volume of steel 3 is diminished over that provided in yarn B, the surface area for contacting a slnal p object is comparable and the tlexibility is grcater. Also, the profile is lower, ..
~$~
re~uJting in a smoother base for subsequent wraps, and if wires are broken in knitting or in use, thc broken cnds do not cause the discomfort that ends of larger diameter wire do because they are not as stiff and tcnd not to prick the skin of the wearer.
The fourth wrap 38 is a strand of 650 denier Spectra 900 fiber identical to the core strand, wrapped in a direction oppositc to that of thc wrap 36, with each turn dircctly adjaccnt thc ncxt to proviidc a substantially complctc covcring to the underlying ~urns and core. Because of thc high cut-resistance of Spectra, this wrap adds substantial cut-resistance to the yarn C.
Thc fifth wrap 40 is a strand of 1300 dcnier multifilamcnt polycstcr fiber wrappcd in thc opposite direction from the fourth wrap, with each turn directly adjacent the next to provide a substantially complete covering to the fourth wrap.
The fifth wrap, while not of highly cut-resistant material, adds body to the yarn and provide good comfort and feel to a garment made from the yarn because the material is soft, flexible, and non-abrasive, and is not slippery, as is Spectra.
The finished diameter of the yarns is between about 0.019 and ~.035 inch, and preferab]y not greater than 0.02S inch, to facilitate machine knitting on cnnventional kni~ting machines.
Modi~ications to the preferred embodiments can be made without departillg from the invension. For example, synthetic materials other than the high strength slretched polyethylene can be used. If lower cut-resistance is acceptable, non-hi~h stren6th synthetic fibers may be substituted while still gainin6 the advantages of th~ pllysical arrangement provided by the invention, particularly the advantages of the bundling of the core and the use of a wire wrap. Also, normal strength synthetic fibers other than nylon and polyester can be used, such as polyethylene, polypropylene, or teflon. Glass fibers of a denier from 150 to 2000, typically Eglass or S glass, can a~so be used as a-core or wrap. Hi6h strength or so-calledhigh performance fibers other than high strength stretched polyethylene (which is sometimes referred to as extended-chain polyethylene) that can be used include hi6h strength aramid fibers, such as high strength Kevlar sold by E.I. duPont deNemours, and high strenglh liquid crystal polymer fibers, such as Vectran HS, sold hy Hoechst Celanese Corporation, Charlotte, North Carolina. A high strength ~$~1~S~
synthetic fiber matcrial is defincd for prcscnt purposes as a fiber material having a tenacity of greatcr than 10 grams pcr dcnicr. Prcfcrably the high strength fibermaterial will havc a tenacity grcatcr than 20 grams per denicr.
In yarns B and C, thc core may havc a denicr of bctwecn S00 and 2000, but prcferably betwccn S00 and 1500; thc first and sccond wraps; may have a denier of betwccn 50 and 400 and bc wrappcd at Icast ltwo ~urns pcr inch, preferably four to tcn turns pcr inch; the third wrap, whcn of wirc, may bc onc or morc annca]ed stainlcss stccl or othcr mctal wircs and, whcthcr of wirc or glass fibcr, may be up to 0.010 inch in total diamctcr and wrappcd at Icast two wraps pcr inch, prcfcrably four to twclvc wraps per inch; thc fourth wrap may havc a dcnicr of 300 to 1200,and thc fifth wrap may havc a dcinicr of 600 to 1500. Modificasions may include othcr wraps locatcd among thosc indicatcd.
The cxprcssion of total diamctcr of thc wrap of metal wircs or glass fibers is intended to specify thc sizc when thc fibcrs arc arranged in a bundle that is; substantially circular in cross scctional shapc, rcgardlcss of thc actual cross sec-tional shapc the wircs or fibcrs takc whcn incorporatcd into thc yarn, which shape may bc non-circular.
Notwithstanding ~he variafions uvailuble, the prcferrcd cmbodiments ar~
believed to ol~er the most advanta~eous constructions, considering bt)tll co~;t alld lhe various pcrformancc characteristics of cut-rcsistance, yurn uniformity, knit-ahilily, cnmfor~, wear, flexibili~y, cleanability, low fluid absorption, and appearance.
Thc prefcrred stainlcss stccl wire is 304 stainlcss stccl (although other 300 series slainless steels are also acceptable and advantageous) havin6 a tensile slrength of about 110,000 to 130,000 pounds pcr square inch. The preferred higllstrength fibcr is Spectra, which has a tenacity of I5 to 35 grams per denier and an elongation-to-break of not morc than S%.
As an altcrnative to bundling the corc fibers 10 or 30 with wraps 12, 14 or 32, 34, a core 40 shown in Figurc 4 can bc used comprised of synthetic multi-filaments 42, preferably of high strcngth fibcr, such as a Spectra, and held in a bundle substantially circular in cross section by a plastic coating 44, e g, Surlyn, allhough other coatings such as thermoplastics, polyurethane and the like may beused. Preferably, the coatin6 is no more than 0.005 inch thick. As a further "
altcMative, multifilament fibers 42a idcntical to flbers 42 may bc heid in a similarly shaped bundlc by a plastie matrlx 46 of a material sueh as any of those used forthe coating 44, to form a core 48 as shown in Figurc 5, to bc uscd in place of the eores 10 or 30 and wraps 12, 14 or 32, 34. Sueh a eorc is predominantly fibers.
A glovc F is shown in Figurc 6 knit from thc yarn 10 and has a polyur-ethanc coating S0 on an outcr surface S2. Thc eoating is a m~ure of thKotropic and non-thixotropic rcsins and is applicd in a dcsircd pattcrn dircetly to thc glove surfacc by an applicator. lhc resin mixturc partia11y pcrmcatcs the yarn for . .
adhcsion upon euring, but does not str~c through to the inside of thc glove. The 10 cured coating is cut-rcsistant, soft, ~c~o~lc and slip-rcsistant (i.c., it has a hi~h coefficicnt of friction against rclativcly d-y surfaecs), and is sceurcly adhered to the ;~ glove. The prefcrrcd patteM shown is formcd by thrcc separatc sinuous strips 54, 56, S8 of polyurcthane approximatcly 1/32 ineh hi8h and 1/16 ineh wide that do not intersect at any place. Thc pattern providcs prcdominantly lateral lines across the finger stalls with eonnecting loops only to the cxtrcme sides of the finger stalls, so in use the wearer need not buelde eoating strips extending along central areas of the finger stalls when the fingers arc bcnt. A more detailed description of the ;' : CO;I~illg and process ror applying it to knitted eut-resistant gloves, ~s well as a ~scription of othcr embodiments of gloves to which it is applied, cun be found in ,~ 20 copending U.S. patent application Serial No. 07/604,589 filed Octobcr 26, 199(), owned by the assignec of this application, the disclosure of which is hereby incorporated herein by reference.
~hile preferred embodiments of the invcntion havc been described in detail, it will he understood that various modifications and alterations may be ma~le therein without departing from the spirit and scope of the invention set torth in the appended claims.
; .
.`.:
,., 9 , ~. '' ~ .
2 ~
THE EMBODIMENTS OF THE INVENTION IN WHICH AN B CLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A cut-resistant yarn suitable for machine knitting, having:
(a) a core of at least a 150 denier comprised of synthetic fiber;
(b~ means retaining fibers of the core in a bundle;
(c) a wrap having a maximum diameter of 0.010 inch consisting of metal wire or glass fiber, two to twelve turns per inch; and (d) one or more wraps of 300 to 2000 denier synthetic fiber with directly adjacent turns.
2. A cut-resistant yarn as set forth in claim 1 wherein said means comprises one or more wraps of 50 to 400 denier synthetic fiber, at least two turns per inch.
3. A cut-resistant yarn as set forth in claim 1 wherein said means comprises a coating of plastic.
4. A cut-resistant yarn as set forth in any of claims 1-3 wherein the synthetic fiber of the core is high strength synthetic fiber.
5. A cut-resistant yarn as set forth in any of claims 1-3 wherein the synthetic fiber of the core is glass fiber.
6. A cut-resistant yarn as set forth in any of claims 1-3 wherein the synthetic fiber of at least one of said wraps is high strength synthetic fiber.
.
.
7. A cut-resistant yarn as set forth in claims 1 or 4 wherein the high strength synthetic fiber is high strength aramid, high strength stretched polyethylene, or high strength liquid crystal polymer.
8. A cut-resistant yarn as set forth in any of claims 1-3 wherein the wraps having at least two or two to twelve wraps per inch have spaced turns and the wraps having directly adjacent turns are disposed about those wraps.
9. A cut-resistant yarn as set forth in any of claims 1-3 wherein the wrap of metal wire or glass fiber is disposed about at least one wrap of synthetic fiber.
: 10. A cut-resistant yarn as set forth in claim 1 wherein the wraps are wound about the core in the following order:
one wrap of 50 to 400 denier synthetic fiber, another wrap of 50 to 400 denier synthetic fiber wound in the opposite direction, a wrap of metal or glass fiber, one wrap of 300 to 2000 denier synthetic fiber, and another wrap of 300 to 2000 denier synthetic fiber wound in the opposite direction.
11. A cut-resistant yarn as set forth in any of claims 2-3 wherein the wraps are wound about the core in the following order:
one wrap of 50 to 400 denier synthetic fiber, another wrap of 50 to 400 denier synthetic fiber wound in the opposite direction, a wrap of metal or glass fiber, one wrap of 300 to 2000 denier synthetic fiber, and another wrap of 300 to 2000 denier synthetic fiber wound in the opposite direction.
. .
' 12. A cut-resistant yarn as set forth in claim 10 wherein the wraps of 50 to 400 denier are of nylon, the wrap of metal or glass fiber is annealed stainless steel, and the second wrap of 300 to 2000 denier synthetic fiber is polyester.
13. A cut-resistant yarn as set forth in claim 12 wherein the first wrap of 300 to 2000 denier synthetic fiber is high strength aramid, high strength stretched polyethylene or high strength liquid crystal polymer.
14. A cut-resistant protective article of apparel, such as a glove, knitted from a cut-resistant yarn as set forth in any of claims 1-3.
15. A cut-resistant glove knitted from a yarn as set forth in any of claims 1-3, including a slip-resistant, flexible, coating adhered as a narrow, raised strip in a predetermined pattern on a surface portion o~ the glove.
16. A cut-resistant glove knitted from a yarn as set forth in any of claims 1-3, including a slip-resistant, flexible, coating of polyurethane adhered as a narrow, raised strip in a predetermined pattern on a surface portion of the glove.
6543b/1 -3 ~ur- G~c;--l?. ~ YD0 PAI E~`EI A~ i S 01: T~E ;`.!': l C~^~NT
, :
,,.
: 10. A cut-resistant yarn as set forth in claim 1 wherein the wraps are wound about the core in the following order:
one wrap of 50 to 400 denier synthetic fiber, another wrap of 50 to 400 denier synthetic fiber wound in the opposite direction, a wrap of metal or glass fiber, one wrap of 300 to 2000 denier synthetic fiber, and another wrap of 300 to 2000 denier synthetic fiber wound in the opposite direction.
11. A cut-resistant yarn as set forth in any of claims 2-3 wherein the wraps are wound about the core in the following order:
one wrap of 50 to 400 denier synthetic fiber, another wrap of 50 to 400 denier synthetic fiber wound in the opposite direction, a wrap of metal or glass fiber, one wrap of 300 to 2000 denier synthetic fiber, and another wrap of 300 to 2000 denier synthetic fiber wound in the opposite direction.
. .
' 12. A cut-resistant yarn as set forth in claim 10 wherein the wraps of 50 to 400 denier are of nylon, the wrap of metal or glass fiber is annealed stainless steel, and the second wrap of 300 to 2000 denier synthetic fiber is polyester.
13. A cut-resistant yarn as set forth in claim 12 wherein the first wrap of 300 to 2000 denier synthetic fiber is high strength aramid, high strength stretched polyethylene or high strength liquid crystal polymer.
14. A cut-resistant protective article of apparel, such as a glove, knitted from a cut-resistant yarn as set forth in any of claims 1-3.
15. A cut-resistant glove knitted from a yarn as set forth in any of claims 1-3, including a slip-resistant, flexible, coating adhered as a narrow, raised strip in a predetermined pattern on a surface portion o~ the glove.
16. A cut-resistant glove knitted from a yarn as set forth in any of claims 1-3, including a slip-resistant, flexible, coating of polyurethane adhered as a narrow, raised strip in a predetermined pattern on a surface portion of the glove.
6543b/1 -3 ~ur- G~c;--l?. ~ YD0 PAI E~`EI A~ i S 01: T~E ;`.!': l C~^~NT
, :
,,.
Claims (16)
1. A cut-resistant yarn suitable for machine knitting, having:
(a) a core of at least a 150 denier comprised of synthetic fiber;
(b) means retaining fibers of the core in a bundle;
(c) a wrap having a maximum diameter of 0.010 inch consisting of metal wire or glass fiber, two to twelve turns per inch; and (d) one or more wraps of 300 to 2000 denier synthetic fiber with directly adjacent turns.
(a) a core of at least a 150 denier comprised of synthetic fiber;
(b) means retaining fibers of the core in a bundle;
(c) a wrap having a maximum diameter of 0.010 inch consisting of metal wire or glass fiber, two to twelve turns per inch; and (d) one or more wraps of 300 to 2000 denier synthetic fiber with directly adjacent turns.
2. A cut-resistant yarn as set forth in claim 1 wherein said means comprises one or more wraps of 50 to 400 denier synthetic fiber, at least two turns per inch.
3. A cut-resistant yarn as set forth in claim 1 wherein said means comprises a coating of plastic.
4. A cut-resistant yarn as set forth in any of claims 1-3 wherein the synthetic fiber of the core is high strength synthetic fiber.
5. A cut-resistant yarn as set forth in any of claims 1-3 wherein the synthetic fiber of the core is glass fiber.
6. A cut-resistant yarn as set forth in any of claims 1-3 wherein the synthetic fiber of at least one of said wraps is high strength synthetic fiber.
7. A cut-resistant yarn as set forth in claims 1 or 4 wherein the high strength synthetic fiber is high strength aramid, high strength stretched polyethylene, or high strength liquid crystal polymer.
8. A cut-resistant yarn as set forth in any of claims 1-3 wherein the wraps having at least two or two to twelve wraps per inch have spaced turns and the wraps having directly adjacent turns are disposed about those wraps.
9. A cut-resistant yarn as set forth in any of claims 1-3 wherein the wrap of metal wire or glass fiber is disposed about at least one wrap of synthetic fiber.
10. A cut-resistant yarn as set forth in claim 1 wherein the wraps are wound about the core in the following order:
one wrap of 50 to 400 denier synthetic fiber, another wrap of 50 to 400 denier synthetic fiber wound in the opposite direction, a wrap of metal or glass fiber, one wrap of 300 to 2000 denier synthetic fiber, and another wrap of 300 to 2000 denier synthetic fiber wound in the opposite direction.
one wrap of 50 to 400 denier synthetic fiber, another wrap of 50 to 400 denier synthetic fiber wound in the opposite direction, a wrap of metal or glass fiber, one wrap of 300 to 2000 denier synthetic fiber, and another wrap of 300 to 2000 denier synthetic fiber wound in the opposite direction.
11. A cut-resistant yarn as set forth in any of claims 2-3 wherein the wraps are wound about the core in the following order:
one wrap of 50 to 400 denier synthetic fiber, another wrap of 50 to 400 denier synthetic fiber wound in the opposite direction, a wrap of metal or glass fiber, one wrap of 300 to 2000 denier synthetic fiber, and another wrap of 300 to 2000 denier synthetic fiber wound in the opposite direction.
one wrap of 50 to 400 denier synthetic fiber, another wrap of 50 to 400 denier synthetic fiber wound in the opposite direction, a wrap of metal or glass fiber, one wrap of 300 to 2000 denier synthetic fiber, and another wrap of 300 to 2000 denier synthetic fiber wound in the opposite direction.
12. A cut-resistant yarn as set forth in claim 10 wherein the wraps of 50 to 400 denier are of nylon, the wrap of metal or glass fiber is annealed stainless steel, and the second wrap of 300 to 2000 denier synthetic fiber is polyester.
13. A cut-resistant yarn as set forth in claim 12 wherein the first wrap of 300 to 2000 denier synthetic fiber is high strength aramid, high strength stretched polyethylene or high strength liquid crystal polymer.
14. A cut-resistant protective article of apparel, such as a glove, knitted from a cut-resistant yarn as set forth in any of claims 1-3.
15. A cut-resistant glove knitted from a yarn as set forth in any of claims 1-3, including a slip-resistant, flexible, coating adhered as a narrow, raised strip in a predetermined pattern on a surface portion of the glove.
16. A cut-resistant glove knitted from a yarn as set forth in any of claims 1-3, including a slip-resistant, flexible, coating of polyurethane adhered as a narrow, raised strip in a predetermined pattern on a surface portion of the glove.
6543b/1-3
6543b/1-3
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65113991A | 1991-02-06 | 1991-02-06 | |
| US07/651,139 | 1991-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2060482A1 true CA2060482A1 (en) | 1992-08-07 |
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ID=24611716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002060482A Abandoned CA2060482A1 (en) | 1991-02-06 | 1992-01-31 | Yarn and safety apparel |
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| US (1) | US6016648A (en) |
| EP (1) | EP0498216B1 (en) |
| JP (1) | JP3210711B2 (en) |
| KR (1) | KR100212364B1 (en) |
| CA (1) | CA2060482A1 (en) |
| DE (1) | DE69205848T2 (en) |
| MX (1) | MX9200484A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6826898B1 (en) | 1985-10-17 | 2004-12-07 | Wells Lamont Industry Group | Knittable yarn and safety apparel |
| CA2108716C (en) * | 1992-10-29 | 2005-01-11 | Joseph Hummel | Knittable yarn and safety apparel |
| US5806295A (en) * | 1994-04-22 | 1998-09-15 | Robins; Steven D. | Protective apparel, multiple core cut-resistant yarn, and method of constructing a multiple core cut-resistant yarn |
| US6413636B1 (en) | 1996-06-27 | 2002-07-02 | Mark A. Andrews | Protective yarn |
| US5845476A (en) * | 1997-06-04 | 1998-12-08 | Kolmes; Nathaniel H. | Composite yarn with fiberglass core |
| DE19800725C2 (en) * | 1998-01-12 | 2001-06-13 | Schuller Gmbh | Fiber composite in strand form and method and device for its production |
| US6175752B1 (en) * | 1998-04-30 | 2001-01-16 | Therasense, Inc. | Analyte monitoring device and methods of use |
| US6581366B1 (en) | 1998-10-22 | 2003-06-24 | World Fibers, Inc. | Cut-resistant stretch yarn fabric and apparel |
| US6341483B1 (en) | 1999-05-13 | 2002-01-29 | Supreme Elastic Corporation | Multi-component yarn and making the same |
| US6351932B1 (en) * | 1999-07-02 | 2002-03-05 | Wells Lamont Industry Group | Cut-resistant antimicrobial yarn and article of wearing apparel made therefrom |
| AU2004214548B2 (en) * | 2000-04-19 | 2007-01-04 | Supreme Elastic Corporation | Multi-component Yarn and Method of Making the Same |
| US6381940B1 (en) * | 2000-04-19 | 2002-05-07 | Supreme Elastic Corporation | Multi-component yarn and method of making the same |
| US6363703B1 (en) * | 2000-06-01 | 2002-04-02 | Supreme Elastic Corporation | Wire wrapped composite yarn |
| US6254988B1 (en) * | 2000-06-16 | 2001-07-03 | E. I. Du Pont De Nemours And Company | Comfortable cut-abrasion resistant fiber composition |
| CA2425653A1 (en) * | 2000-10-13 | 2002-04-18 | Wells Lamont Industry Group, Inc. | Processes and compositions for treating fabric |
| US7121077B2 (en) | 2000-10-31 | 2006-10-17 | World Fibers, Inc. | Antimicrobial cut-resistant composite yarn and garments knitted or woven therefrom |
| US6779330B1 (en) | 2000-10-31 | 2004-08-24 | World Fibers, Inc. | Antimicrobial cut-resistant composite yarn and garments knitted or woven therefrom |
| JP4785291B2 (en) * | 2001-07-31 | 2011-10-05 | 東京瓦斯株式会社 | Pipeline closure |
| FR2828894B1 (en) * | 2001-08-24 | 2004-01-02 | Schappe Sa | CUT RESISTANT YARN, IN PARTICULAR FOR THE PRODUCTION OF PROTECTIVE CLOTHING |
| FR2834522B1 (en) * | 2002-01-10 | 2005-05-13 | Schappe Sa | CUT-RESISTANT WIRE, IN PARTICULAR FOR CARRYING PROTECTIVE CLOTHING |
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| US3607822A (en) * | 1967-03-23 | 1971-09-21 | Takeda Chemical Industries Ltd | Thixotropical polyurethane compositions |
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| US3923926A (en) * | 1974-01-29 | 1975-12-02 | Dai Ichi Kogyo Seiyaku Co Ltd | Thixotropic polyurethane composition |
| US4384449A (en) * | 1976-10-05 | 1983-05-24 | Robert M. Byrnes, Sr. | Protective gloves and the like and a yarn with flexible core wrapped with aramid fiber |
| US4470251A (en) * | 1978-03-30 | 1984-09-11 | Bettcher Industries, Inc. | Knittable yarn and safety apparel made therewith |
| US4267044A (en) * | 1978-04-10 | 1981-05-12 | Nl Industries, Inc. | Thixotropic polyurethane compositions as sealants for membrane separatory devices |
| US4640950A (en) * | 1983-06-22 | 1987-02-03 | Takeda Chemical Industries, Ltd. | Thixotropic polyurethane resin compositions |
| US4838017A (en) * | 1986-10-03 | 1989-06-13 | Kolmes Nathaniel H | Wire wrapped yarn for protective garments |
| US4777789A (en) * | 1986-10-03 | 1988-10-18 | Kolmes Nathaniel H | Wire wrapped yarn for protective garments |
| US4912781A (en) * | 1988-10-11 | 1990-04-03 | Robins Steven D | Cut resistant yarn construction and body protective apparel |
| US4936085A (en) * | 1989-06-13 | 1990-06-26 | Kolmes Nathaniel H | Yarn and glove |
-
1992
- 1992-01-22 DE DE69205848T patent/DE69205848T2/en not_active Expired - Fee Related
- 1992-01-22 EP EP92101018A patent/EP0498216B1/en not_active Expired - Lifetime
- 1992-01-31 CA CA002060482A patent/CA2060482A1/en not_active Abandoned
- 1992-02-04 MX MX9200484A patent/MX9200484A/en not_active IP Right Cessation
- 1992-02-05 JP JP1933492A patent/JP3210711B2/en not_active Expired - Fee Related
- 1992-02-06 KR KR1019920001683A patent/KR100212364B1/en not_active IP Right Cessation
-
1994
- 1994-02-25 US US08/206,022 patent/US6016648A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE69205848T2 (en) | 1996-07-04 |
| JP3210711B2 (en) | 2001-09-17 |
| EP0498216A1 (en) | 1992-08-12 |
| DE69205848D1 (en) | 1995-12-14 |
| JPH0665830A (en) | 1994-03-08 |
| US6016648A (en) | 2000-01-25 |
| KR100212364B1 (en) | 1999-08-02 |
| EP0498216B1 (en) | 1995-11-08 |
| MX9200484A (en) | 1992-08-01 |
| KR920016629A (en) | 1992-09-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |